PSX Series – High-Speed Semiconductor Fuse, Square Body Series - Littelfuse PSX High-Speed Fuses Provide Superior Protection

POWR-Speed Overcurrent Protection Fundamentals
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Disclaimer Notice

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

The PSX series is a POWR-SPEED® high-speed, square body fuse specifically designed to protect battery energy storage systems (BESS), photovoltaic inverters, and many dc applications such as dc common bus systems, larger industrial regenerative drives, rectifiers, and metal processing equipment. These fuses are extremely fast-acting, offering high-speed performance up to 1500 V dc, ranging from 80 A to 1400 A in the smallest NH XL package sizes. The PSX series is available with multiple mounting terminations including flush-end, DIN, and bolted-blade styles. Visual blown fuse indication is standard on all fuses and an optional microswitch is available for external indication. The PSX series is certified to UL248-13 and designed to meet IEC 60269-7 (Class aBat) battery protection fuse standard.

POWR-SPEED® brand fuses are optimized for performance and efficiency to help extend equipment life. They offer Littelfuse-developed technology that sets tomorrow’s standards for accuracy, consistent quality, reliability, and predictable performance.

Features

  • High dc voltage rating up to 1500 V dc
  • Dc interrupting rating is 250 kA
  • Extremely fast-acting for high-speed performance
  • Low watt loss provides energy efficiency for BESS applications
  • Compact NH 1XL and 3XL sizes offer flexibility

Access specifications, certifications, check availability and order parts below

Catalog #Amps (A)Interrupting RatingOpeningCase SizeStockSamplesCompare
PSX1XLDB008080250 kA @ 1500 VdcaBatNH 1XLCheckOrder
PSX1XLDB0100100250 kA @ 1500 VdcaBatNH 1XLCheckOrder
PSX1XLDB0125125250 kA @ 1500 VdcaBatNH 1XLCheckOrder
PSX1XLDB0160160250 kA @ 1500 VdcaBatNH 1XLCheckOrder
PSX1XLDB0200200250 kA @ 1500 VdcaBatNH 1XLCheckOrder
PSX1XLDB0250250250 kA @ 1500 VdcaBatNH 1XLCheckOrder
PSX1XLDB0280280250 kA @ 1500 VdcaBatNH 1XLCheckOrder
PSX1XLDB0315315250 kA @ 1500 VdcaBatNH 1XLCheckOrder
PSX1XLDB0350350250 kA @ 1500 VdcaBatNH 1XLCheckOrder
PSX1XLDB0400400250 kA @ 1500 VdcaBatNH 1XLCheckOrder
PSX1XLDB0450450250 kA @ 1500 VdcaBatNH 1XLCheckOrder
PSX1XLDB0500500250 kA @ 1500 VdcaBatNH 1XLCheckOrder
PSX1XLDB0550550250 kA @ 1500 VdcaBatNH 1XLCheckOrder
PSX1XLDB0630630250 kA @ 1500 VdcaBatNH 1XLCheckOrder
PSX1XLFL008080250 kA @ 1500 VdcaBatNH 1XLCheckOrder
PSX1XLFL0100100250 kA @ 1500 VdcaBatNH 1XLCheckOrder
PSX1XLFL0125125250 kA @ 1500 VdcaBatNH 1XLCheckOrder
PSX1XLFL0160160250 kA @ 1500 VdcaBatNH 1XLCheckOrder
PSX1XLFL0200200250 kA @ 1500 VdcaBatNH 1XLCheckOrder
PSX1XLFL0250250250 kA @ 1500 VdcaBatNH 1XLCheckOrder
PSX1XLFL0280280250 kA @ 1500 VdcaBatNH 1XLCheckOrder
PSX1XLFL0315315250 kA @ 1500 VdcaBatNH 1XLCheckOrder
PSX1XLFL0350350250 kA @ 1500 VdcaBatNH 1XLCheckOrder
PSX1XLFL0400400250 kA @ 1500 VdcaBatNH 1XLCheckOrder
PSX1XLFL0450450250 kA @ 1500 VdcaBatNH 1XLCheckOrder
PSX1XLFL0500500250 kA @ 1500 VdcaBatNH 1XLCheckOrder
PSX1XLFL0550550250 kA @ 1500 VdcaBatNH 1XLCheckOrder
PSX1XLFL0630630250 kA @ 1500 VdcaBatNH 1XLCheckOrder
PSX1XLUB008080250 kA @ 1500 VdcaBatNH 1XLCheckOrder
PSX1XLUB0100100250 kA @ 1500 VdcaBatNH 1XLCheckOrder
PSX1XLUB0125125250 kA @ 1500 VdcaBatNH 1XLCheckOrder
PSX1XLUB0160160250 kA @ 1500 VdcaBatNH 1XLCheckOrder
PSX1XLUB0200200250 kA @ 1500 VdcaBatNH 1XLCheckOrder
PSX1XLUB0250250250 kA @ 1500 VdcaBatNH 1XLCheckOrder
PSX1XLUB0280280250 kA @ 1500 VdcaBatNH 1XLCheckOrder
PSX1XLUB0315315250 kA @ 1500 VdcaBatNH 1XLCheckOrder
PSX1XLUB0350350250 kA @ 1500 VdcaBatNH 1XLCheckOrder
PSX1XLUB0400400250 kA @ 1500 VdcaBatNH 1XLCheckOrder
PSX1XLUB0450450250 kA @ 1500 VdcaBatNH 1XLCheckOrder
PSX1XLUB0500500250 kA @ 1500 VdcaBatNH 1XLCheckOrder
PSX1XLUB0550550250 kA @ 1500 VdcaBatNH 1XLCheckOrder
PSX1XLUB0630630250 kA @ 1500 VdcaBatNH 1XLCheckOrder
PSX3XLDB0450450250 kA @ 1500 VdcaBatNH 3XLCheckOrder
PSX3XLDB0500500250 kA @ 1500 VdcaBatNH 3XLCheckOrder
PSX3XLDB0550550250 kA @ 1500 VdcaBatNH 3XLCheckOrder
PSX3XLDB0630630250 kA @ 1500 VdcaBatNH 3XLCheckOrder
PSX3XLDB0700700250 kA @ 1500 VdcaBatNH 3XLCheckOrder
PSX3XLDB0800800250 kA @ 1500 VdcaBatNH 3XLCheckOrder
PSX3XLDB0900900250 kA @ 1500 VdcaBatNH 3XLCheckOrder
PSX3XLDB10001000250 kA @ 1500 VdcaBatNH 3XLCheckOrder
PSX3XLDB11001100250 kA @ 1500 VdcaBatNH 3XLCheckOrder
PSX3XLDB12501250250 kA @ 1500 VdcaBatNH 3XLCheckOrder
PSX3XLDB14001400250 kA @ 1500 VdcaBatNH 3XLCheckOrder
PSX3XLFL0450450250 kA @ 1500 VdcaBatNH 3XLCheckOrder
PSX3XLFL0500500250 kA @ 1500 VdcaBatNH 3XLCheckOrder
PSX3XLFL0550550250 kA @ 1500 VdcaBatNH 3XLCheckOrder
PSX3XLFL0630630250 kA @ 1500 VdcaBatNH 3XLCheckOrder
PSX3XLFL0700700250 kA @ 1500 VdcaBatNH 3XLCheckOrder
PSX3XLFL0800800250 kA @ 1500 VdcaBatNH 3XLCheckOrder
PSX3XLFL0900900250 kA @ 1500 VdcaBatNH 3XLCheckOrder
PSX3XLFL10001000250 kA @ 1500 VdcaBatNH 3XLCheckOrder
PSX3XLFL11001100250 kA @ 1500 VdcaBatNH 3XLCheckOrder
PSX3XLFL12501250250 kA @ 1500 VdcaBatNH 3XLCheckOrder
PSX3XLFL14001400250 kA @ 1500 VdcaBatNH 3XLCheckOrder
PSX3XLUB0450450250 kA @ 1500 VdcaBatNH 3XLCheckOrder
PSX3XLUB0500500250 kA @ 1500 VdcaBatNH 3XLCheckOrder
PSX3XLUB0550550250 kA @ 1500 VdcaBatNH 3XLCheckOrder
PSX3XLUB0630630250 kA @ 1500 VdcaBatNH 3XLCheckOrder
PSX3XLUB0700700250 kA @ 1500 VdcaBatNH 3XLCheckOrder
PSX3XLUB0800800250 kA @ 1500 VdcaBatNH 3XLCheckOrder
PSX3XLUB0900900250 kA @ 1500 VdcaBatNH 3XLCheckOrder
PSX3XLUB10001000250 kA @ 1500 VdcaBatNH 3XLCheckOrder
PSX3XLUB11001100250 kA @ 1500 VdcaBatNH 3XLCheckOrder
PSX3XLUB12501250250 kA @ 1500 VdcaBatNH 3XLCheckOrder
PSX3XLUB14001400250 kA @ 1500 VdcaBatNH 3XLCheckOrder
Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s) IPC-Material Declaration
PSX1XLDB0080X POWR-SPEED SQB SIZE 1XL DIN BL 80A RoHS No 09/07/2020 PbFree No 09/07/2020 CoC_RoHS10_PSX1XLDB0080X REACH209_Declaration_PSX1XLDB0080X Yes
09/07/2020
Does not Contain
PSX1XLDB0100X POWR-SPEED SQB SIZE 1XL DIN BL 100A RoHS No PbFree No CoC_RoHS10_PSX1XLDB0100X REACH209_Declaration_PSX1XLDB0100X Yes
Does not Contain
PSX1XLDB0125X POWR-SPEED SQB SIZE 1XL DIN BL 125A RoHS No PbFree No CoC_RoHS10_PSX1XLDB0125X REACH209_Declaration_PSX1XLDB0125X Yes
Does not Contain
PSX1XLDB0160X POWR-SPEED SQB SIZE 1XL DIN BL 160A RoHS No PbFree No CoC_RoHS10_PSX1XLDB0160X REACH209_Declaration_PSX1XLDB0160X Yes
Does not Contain
PSX1XLDB0200X POWR-SPEED SQB SIZE 1XL DIN BL 200A RoHS No PbFree No CoC_RoHS10_PSX1XLDB0200X REACH209_Declaration_PSX1XLDB0200X Yes
Does not Contain
PSX1XLDB0250X POWR-SPEED SQB SIZE 1XL DIN BL 250A RoHS No PbFree No CoC_RoHS10_PSX1XLDB0250X REACH209_Declaration_PSX1XLDB0250X Yes
Does not Contain
PSX1XLDB0280X POWR-SPEED SQB SIZE 1XL DIN BL 280A RoHS No PbFree No CoC_RoHS10_PSX1XLDB0280X REACH209_Declaration_PSX1XLDB0280X Yes
Does not Contain
PSX1XLDB0315X POWR-SPEED SQB SIZE 1XL DIN BL 315A RoHS No PbFree No CoC_RoHS10_PSX1XLDB0315X REACH209_Declaration_PSX1XLDB0315X Yes
Does not Contain
PSX1XLDB0350X POWR-SPEED SQB SIZE 1XL DIN BL 350A RoHS No PbFree No CoC_RoHS10_PSX1XLDB0350X REACH209_Declaration_PSX1XLDB0350X Yes
Does not Contain
PSX1XLDB0400X POWR-SPEED SQB SIZE 1XL DIN BL 400A RoHS No PbFree No CoC_RoHS10_PSX1XLDB0400X REACH209_Declaration_PSX1XLDB0400X Yes
Does not Contain
PSX1XLDB0450X POWR-SPEED SQB SIZE 1XL DIN BL 450A RoHS No PbFree No CoC_RoHS10_PSX1XLDB0450X REACH209_Declaration_PSX1XLDB0450X Yes
Does not Contain
PSX1XLDB0500X POWR-SPEED SQB SIZE 1XL DIN BL 500A RoHS No PbFree No CoC_RoHS10_PSX1XLDB0500X REACH209_Declaration_PSX1XLDB0500X Yes
Does not Contain
PSX1XLDB0550X POWR-SPEED SQB SIZE 1XL DIN BL 550A RoHS No PbFree No CoC_RoHS10_PSX1XLDB0550X Yes
PSX1XLDB0630X POWR-SPEED SQB SIZE 1XL DIN BL 630A RoHS No PbFree No Yes
PSX1XLFL0080X POWR-SPEED SQB SIZE 1XL FLUSH 80A RoHS No PbFree No CoC_RoHS10_PSX1XLFL0080X REACH209_Declaration_PSX1XLFL0080X Yes
Does not Contain
PSX1XLFL0100X POWR-SPEED SQB SIZE 1XL FLUSH 100A RoHS No PbFree No REACH209_Declaration_PSX1XLFL0100X Yes
Does not Contain
PSX1XLFL0125X POWR-SPEED SQB SIZE 1XL FLUSH 125A RoHS No PbFree No REACH209_Declaration_PSX1XLFL0125X Yes
Does not Contain
PSX1XLFL0160X POWR-SPEED SQB SIZE 1XL FLUSH 160A RoHS No PbFree No REACH209_Declaration_PSX1XLFL0160X Yes
Does not Contain
PSX1XLFL0200X POWR-SPEED SQB SIZE 1XL FLUSH 200A RoHS No PbFree No REACH209_Declaration_PSX1XLFL0200X Yes
Does not Contain
PSX1XLFL0250X POWR-SPEED SQB SIZE 1XL FLUSH 250A RoHS No PbFree No REACH209_Declaration_PSX1XLFL0250X Yes
Does not Contain
PSX1XLFL0280X POWR-SPEED SQB SIZE 1XL FLUSH 280A RoHS No PbFree No Yes
PSX1XLFL0315X POWR-SPEED SQB SIZE 1XL FLUSH 315A RoHS No PbFree No Yes
PSX1XLFL0350X POWR-SPEED SQB SIZE 1XL FLUSH 350A RoHS No PbFree No Yes
PSX1XLUB0400X POWR-SPEED SQB SIZE 1XL BOLTED BL 400A RoHS No 09/07/2020 PbFree No 09/07/2020 CoC_RoHS10_PSX1XLUB0400X REACH209_Declaration_PSX1XLUB0400X Yes
09/07/2020
Does not Contain
PSX1XLUB0450X POWR-SPEED SQB SIZE 1XL BOLTED BL 450A RoHS No 09/07/2020 PbFree No 09/07/2020 CoC_RoHS10_PSX1XLUB0450X REACH209_Declaration_PSX1XLUB0450X Yes
09/07/2020
Does not Contain
PSX1XLUB0500X POWR-SPEED SQB SIZE 1XL BOLTED BL 500A RoHS No 09/07/2020 PbFree No 09/07/2020 CoC_RoHS10_PSX1XLUB0500X REACH209_Declaration_PSX1XLUB0500X Yes
09/07/2020
Does not Contain
PSX1XLUB0550X POWR-SPEED SQB SIZE 1XL BOLTED BL 550A RoHS No 09/07/2020 PbFree No 09/07/2020 CoC_RoHS10_PSX1XLUB0550X REACH209_Declaration_PSX1XLUB0550X Yes
09/07/2020
Does not Contain
PSX1XLUB0630X POWR-SPEED SQB SIZE 1XL BOLTED BL 630A RoHS No 09/07/2020 PbFree No 09/07/2020 CoC_RoHS10_PSX1XLUB0630X REACH209_Declaration_PSX1XLUB0630X Yes
09/07/2020
Does not Contain
PSX3XLDB0800X POWR-SPEED SQB SIZE 3XL DIN BL 800A RoHS No 09/07/2020 PbFree No 09/07/2020 CoC_RoHS10_PSX3XLDB0800X Yes
09/07/2020
PSX3XLDB0900X POWR-SPEED SQB SIZE 3XL DIN BL 900A RoHS No 09/07/2020 PbFree No 09/07/2020 CoC_RoHS10_PSX3XLDB0900X Yes
09/07/2020
PSX3XLDB1000X POWR-SPEED SQB SIZE 3XL DIN BL 1000A RoHS No 09/07/2020 PbFree No 09/07/2020 CoC_RoHS10_PSX3XLDB1000X Yes
09/07/2020
PSX3XLDB1100X POWR-SPEED SQB SIZE 3XL DIN BL 1100A RoHS No 09/07/2020 PbFree No 09/07/2020 CoC_RoHS10_PSX3XLDB1100X Yes
09/07/2020
PSX3XLDB1250X POWR-SPEED SQB SIZE 3XL DIN BL 1250A RoHS No 09/07/2020 PbFree No 09/07/2020 CoC_RoHS10_PSX3XLDB1250X Yes
09/07/2020
PSX3XLDB1400X POWR-SPEED SQB SIZE 3XL DIN BL 1400A RoHS No 09/07/2020 PbFree No 09/07/2020 CoC_RoHS10_PSX3XLDB1400X Yes
09/07/2020
PSX3XLFL0800X POWR-SPEED SQB SIZE 3XL FLUSH 800A RoHS No 09/07/2020 PbFree No 09/07/2020 CoC_RoHS10_PSX3XLFL0800X Yes
09/07/2020
PSX3XLFL0900X POWR-SPEED SQB SIZE 3XL FLUSH 900A RoHS No 09/07/2020 PbFree No 09/07/2020 CoC_RoHS10_PSX3XLFL0900X Yes
09/07/2020
PSX3XLFL1000X POWR-SPEED SQB SIZE 3XL FLUSH 1000A RoHS No 09/07/2020 PbFree No 09/07/2020 CoC_RoHS10_PSX3XLFL1000X REACH_SVHC Declaration_PSX3XLFL1000X Yes
09/07/2020
Does not Contain
PSX3XLFL1100X POWR-SPEED SQB SIZE 3XL FLUSH 1100A RoHS No 09/07/2020 PbFree No 09/07/2020 CoC_RoHS10_PSX3XLFL1100X Yes
09/07/2020
PSX3XLFL1250X POWR-SPEED SQB SIZE 3XL FLUSH 1250A RoHS No PbFree No CoC_RoHS10_PSX3XLFL1250X Yes
PSX3XLFL1400X POWR-SPEED SQB SIZE 3XL FLUSH 1400A RoHS No PbFree No CoC_RoHS10_PSX3XLFL1400X Yes
PSX3XLUB0800X POWR-SPEED SQB SIZE 3XL BOLTED BL 800A RoHS No PbFree No CoC_RoHS10_PSX3XLUB0800X Yes
PSX3XLUB0900X POWR-SPEED SQB SIZE 3XL BOLTED BL 900A RoHS No PbFree No CoC_RoHS10_PSX3XLUB0900X Yes
PSX3XLUB1000X POWR-SPEED SQB SIZE 3XL BOLTED BL 1000A RoHS No PbFree No CoC_RoHS10_PSX3XLUB1000X REACH_SVHC Declaration (Contain)_PSX3XLUB1000X Yes
Contains
PSX3XLUB1100X POWR-SPEED SQB SIZE 3XL BOLTED BL 1100A RoHS No PbFree No CoC_RoHS10_PSX3XLUB1100X Yes
PSX3XLUB1250X POWR-SPEED SQB SIZE 3XL BOLTED BL 1250A RoHS No PbFree No CoC_RoHS10_PSX3XLUB1250X Yes
PSX3XLUB1400X POWR-SPEED SQB SIZE 3XL BOLTED BL 1400A RoHS No PbFree No CoC_RoHS10_PSX3XLUB1400X Yes
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